Today King's Cross is a bustling train terminus with travel links to the continent

But the plan was never followed through because of a lack of support.

Other ideas that never came to be include Battersea Power Station, which was once destined to become a Las Vegas-style indoor theme park.

The sketches, which were found by entrepreneur John Broome in 2014 while clearing out his house, show the atrium of the power station filled with white-knuckle rollercoasters, a giant ice rink, and six storeys of shops, cinemas and cultural experiences each themed around a different continent.